What was I supposed to do?

Anna has been doing really good potty training but every now and then she has an accident. Today we were in Barnes & Nobles letting her look at the children's books when all of a sudden Nathan looks at her then looks at me with this look like "oh crap get her!" So I look at Anna and she is standing there on a hardwood floor stage with her legs crossed standing in a puddle of pee. Nathan and I were mortified! So I grab Cole's burp cloth and wipe it up as best as I can. I didn't tell anyone who worked there. I still don't know if I was supposed to let them know so they could sanitize it. Anna then begins walking through the store with her legs spread apart asking random people if they know where the potty is. Nathan and I, still mortified, could only laugh from that point on. While all of this was happening Cole was spitting up everywhere yet there was no more burp cloth to wipe it up. After a potty break (nothing left in the tank really, it was all over the floor) and a fresh change of clothes we were on our way to the next store. Potty training is hard but worth it.